Zobrazeno 1 - 10
of 78
pro vyhledávání: '"William D. Cowan"'
Autor:
William D. Cowan
Publikováno v:
MOEMS: Micro-Opto-Electro-Mechanical Systems
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10741796c964915b5e9479b282c78fd8
https://doi.org/10.1117/3.2265061.ch12
https://doi.org/10.1117/3.2265061.ch12
Publikováno v:
Journal of Microelectromechanical Systems. 22:655-661
We present improvements in RF microelectromechanical switch design and fabrication that demonstrated improved lifetimes in cycled switches. First, implementation of RuO2-Au contact metallurgy into an existing design showed improved switch lifetime ov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8347896464629bce2253dce5652641cd
https://doi.org/10.1109/jmems.2013.2239256
https://doi.org/10.1109/jmems.2013.2239256
Autor:
David J. Rabb, William D. Cowan, David L. McCray, Betty Lise Anderson, Peter Chen, Olga Blum-Spahn, James G. Ho, Allen Y. Yi, Martin Flannery, Delton J. Rowe
Publikováno v:
Journal of Lightwave Technology. 29:1343-1353
An optical true time delay device is demonstrated that is capable of supporting 112 antennas with 81 different delays (>; 6 bits) in a volume 16" × 5" × 4" including the box with electronics. It uses a free-space design based on the White cell, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e50230e9d900fe36a6dee1ed738343e9
https://doi.org/10.1109/jlt.2011.2124444
https://doi.org/10.1109/jlt.2011.2124444
Publikováno v:
Journal of Lightwave Technology. 27:879-886
A new optical configuration for switching light beams called a spherical Fourier cell is explained. Its use for optical true time delay is outlined. An experimental apparatus was constructed for a 6-bit delay system, with 2 bits demonstrated. Delays
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcff9ede44a36187d47651f14a83cf6c
https://doi.org/10.1109/jlt.2008.927762
https://doi.org/10.1109/jlt.2008.927762
Autor:
David A. Czaplewski, Jordan E. Massad, William D. Cowan, Jaron D. Kuppers, Christopher W. Dyck, Isak C. Reines, Christopher P. Tigges, Hartono Sumali
Publikováno v:
Journal of Microelectromechanical Systems. 15:1586-1594
A soft-landing actuation waveform was designed to reduce the bounce of a single-pole single-throw (SPST) ohmic radio frequency (RF) microelectromechanical systems (MEMS) switch during actuation. The waveform consisted of an actuation voltage pulse, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b6e2911b457bf8b876582cdcdf5564a
https://doi.org/10.1109/jmems.2006.883576
https://doi.org/10.1109/jmems.2006.883576
Autor:
Grant D. Grossetete, Alejandro J. Grine, Daryl J. Dagel, William D. Cowan, Olga B. Spahn, Michael J. Shaw, Bernhard Jokiel, Paul J. Resnick
Publikováno v:
Journal of Microelectromechanical Systems. 15:572-583
Surface-micromachined deformable mirrors that exhibit greater than 10 /spl mu/m of stroke are presented. The segmented arrays described here consist of 61 and 85 hexagonal, piston/tip/tilt mirrors (three actuators each) with diameters of 500 and 430
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9b2d62ad7f90edf8991e12493027a38
https://doi.org/10.1109/jmems.2006.876794
https://doi.org/10.1109/jmems.2006.876794
Publikováno v:
Sensors and Actuators A: Physical. 104:107-116
In this research, micro-Raman spectroscopy is employed to examine, and characterize the residual stress in MUMPs polysilicon, micro-electro-mechanical systems (MEMS) microbridge structures. Currently, few techniques are available to measure the resid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b808f6fb56e498aadf42057836d55309
https://doi.org/10.1016/s0924-4247(02)00432-6
https://doi.org/10.1016/s0924-4247(02)00432-6
Publikováno v:
Tribology Letters. 9:199-209
The effect of surface chemistry on the tribological performance and reliability of a MEMS lateral output motor is reported. Relative humidity (RH) and octadecyltrichlorosilane (OTS) self-assembled monolayer (SAM) coatings were used to change surface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e3f7963719615a67794c28316cac7fd
https://doi.org/10.1023/a:1018817123441
https://doi.org/10.1023/a:1018817123441
Publikováno v:
IFAC Proceedings Volumes. 33:119-122
MEMS devices are becoming a pervasive part of today’s technology world. Currently, MEMS designers have to take residual stresses into account when designing microdevices. A more ideal state would be for the developer to design to function and to co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d6c5e20c05683588228a0486c849a83
https://doi.org/10.1016/s1474-6670(17)36820-9
https://doi.org/10.1016/s1474-6670(17)36820-9
Publikováno v:
Optical and Quantum Electronics. 31:451-468
Controlling optical aberrations is one of the enduring problems in optics. Recent advances in adaptive optics for astronomical applications have shown the promise of adaptive optics technology for controlling aberrations. Micro-electro-mechanical def
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1790e66dc68ad4077d2141ef56bf2524
https://doi.org/10.1023/a:1006967012137
https://doi.org/10.1023/a:1006967012137